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In the Swim Black Algaecide Does the Job When All Others Fail

Black algae is known to be hard to remove from a pool which is why many pool owners turn to In the Swim’s black algaecide. Its special formula helps kill and prevent black algae, along with all other algae, from blooming in your pool with regular use.

Black algae killer from In the Swim uses copper as an active, dependable ingredient

Rated 5 out of
5 by
ETCS from
It works well!Have used this in the past and it works well enough to purchase again. It devastates any returning black algae. I had it speckled all over when I went to open my pool 2 years ago. Nothing worked till this.
I did scrub all over once I put it in the first time. The algae let go and was swept up and away.

Date published: 2016-09-18

Rated 2 out of
5 by
mitchjgray from
Didn't seem to help muchNot sure if Salt water pool kept it from performing, but used all 4 bottles and there was only slight results...

Date published: 2016-09-05

Rated 5 out of
5 by
Ronnie from
Black AlgaecideI bought this 3 weeks ago and I will be recording. great product thanks!!!

Date published: 2016-06-20

Rated 5 out of
5 by
Russ from
This is the Holy Grail of AlgaecidesI had terrible problems with black algae spots that could not be killed by any other products. They resisted brushing, and even pressure washing in my drained pool. Upon re-filling my pool, the black algae came back to life. I found this product, added it to my pool according to directions, and it quickly killed the black algae once and for all. I now use this product to prevent any algae growth in my pool.